HP EliteBook 840 G6 WLAN module replacement (like-for-like)

Step-by-step HP EliteBook 840 G6 WLAN module replacement paraphrased from HP's official Maintenance and Service Guide, with page citations.

Source: paraphrased from HP's official Maintenance and Service Guide (PDF, printed pages 23, 32, 35, 37–38, 41–42, 49–50). Not bench-tested. We have not performed this repair; keep HP's manual open for its illustrations. Scope restrictions below are part of the guide: do not apply it to other models, generations or configurations. Service manuals are written for trained technicians; work at your own risk.

Labels: DOCUMENTED = taken from HP's manual; PROPOSED = our own joining or ordering of HP's directions, not an HP instruction; UNPERFORMED = a suggested check that has not been carried out.

Applies to

HP EliteBook 840 G6. Confirm the exact model on the service label before starting.

Like-for-like WLAN/Bluetooth module service, limited to the fitted OEM configuration. The executable route requires the two numbered antenna leads and Main 1/Aux 2 terminals documented here; it does not establish a one-lead or three-terminal variant.

WLAN is in the Customer Self-Repair chapter, subject to local program and warranty eligibility. This is not universal permission; referenced battery/internal service restrictions still apply. HP printed 37, PDF 47; HP printed 48, PDF 58

Assembly inventory and configuration

All listed WLAN service candidates from this manual are inventoried below. These are not an upgrade list or proof that alternatives share an electrical interface. Exact factory configuration and regional eligibility must be checked. HP printed 23, PDF 33; HP printed 41, PDF 51; HP printed 42, PDF 52

Exact HP EliteBook 840 G6 and a verified like-for-like OEM assembly/configuration; preserve original routing and connector identity. Serial fit and regional eligibility remain unverified. Other models/generations, arbitrary substitutions and upgrades. No WWAN substitution, interface conversion or blanket regional-radio approval. Stop if fitted lead/terminal arrangement differs from the documented scope. HP printed 23, PDF 33; HP printed 41, PDF 51; HP printed 42, PDF 52

Phillips P1; nonconductive, nonmarking pry tool; grounded ESD workstation/strap. Protective sleeves on any unconnected WLAN antenna connectors as documented. HP printed 32, PDF 42; HP printed 42, PDF 52

Documented facts and proposed boundaries

The target is WLAN/Bluetooth, not WWAN. Antenna lead count, electrical interface, vPro option and exact spare suffix remain configuration limits; slot shape and radio marketing names alone do not establish interchangeable modules. Basis: DOCUMENTED option inventory; PROPOSED like-for-like scope restriction. HP printed 23, PDF 33; HP printed 41, PDF 51

The illustrated WLAN removal uses antenna connectors (callout 1), one retaining screw (callout 2) and module withdrawal from its socket at an angle (callout 3). Reinstallation reverses that sequence. No connector latch travel, removal angle in degrees or torque is specified. Basis: DOCUMENTED OEM text and applicable figure. HP printed 41, PDF 51; HP printed 42, PDF 52

Protective sleeves are required on WLAN antenna connectors left unconnected to module terminals. Original labels/routing may be recorded as an editorial precaution, but that does not resolve contradictory OEM terminal evidence. Basis: DOCUMENTED sleeve requirement; PROPOSED original-configuration recording precaution. HP printed 42, PDF 52

The product table distinguishes 9560 M.2 2230 MIPI/BRI from AX200 M.2 2230 PCIe/USB. Preserve the installed interface and vPro/non-vPro option. The removal note prints Aux as 2 with a trailing quotation-like mark; it does not repeat Main terminal 1. Basis: DOCUMENTED OEM text and applicable figure. HP printed 3, PDF 13; HP printed 41, PDF 51

Ordered replacement procedure

  1. prepare - Save work and shut down through the operating system. If power/hibernation state is uncertain, start normally and then shut down. Disconnect external devices and AC power before opening. Use a flat ESD-protected grounded work surface with a grounded wrist strap; avoid pins and circuitry and keep screws organized. Basis: DOCUMENTED shutdown/ESD precautions; PROPOSED organization join. HP printed 37, PDF 47; HP printed 35, PDF 45
  2. access - Turn the computer upside down. Loosen five ordinary captive screws and three inset captive screws (eight total). Start under the display at the upper-left corner, release the bottom cover and lift it away. Basis: DOCUMENTED OEM operation paraphrased. HP printed 37, PDF 47; HP printed 38, PDF 48
  3. isolate - Disconnect the main-battery cable at the system board, handling the connector rather than pulling its wires. Leave the battery pack and its retention screws installed: this target procedure calls for cable isolation only. Basis: DOCUMENTED OEM operation paraphrased. HP printed 49, PDF 59
  4. disconnect - Before detaching anything, confirm that this fitted like-for-like WLAN module has the documented two-lead arrangement: cable 1 at Main terminal 1 and cable 2 at Aux terminal 2. Preserve their original routes and labels. Carefully disconnect the two antenna connectors at the module, handling the connectors with minimal necessary force rather than pulling the wires. If the arrangement differs, stop outside this guide’s supported scope. Basis: DOCUMENTED terminal assignments/handling; PROPOSED pre-removal configuration check. HP printed 41, PDF 51; HP printed 32, PDF 42
  5. remove - Remove the single Phillips M2.0 × 2.0 WLAN retaining screw. The edge opposite the socket rises; withdraw the WLAN module from the socket at that angle. Keep the module notch/socket relationship identifiable and avoid its contacts. Basis: DOCUMENTED OEM operation paraphrased. HP printed 41, PDF 51; HP printed 42, PDF 52
  6. install - Insert the verified like-for-like WLAN module into its original socket in the same notched orientation, reverse the withdrawal motion, lower the free edge and reinstall the single Phillips M2.0 × 2.0 screw. No torque value or numeric insertion angle is supplied. Basis: DOCUMENTED reverse-install instruction expanded. HP printed 41, PDF 51; HP printed 42, PDF 52
  7. reconnect - Reconnect lead 1 to Main 1 and lead 2 to Aux 2, matching the confirmed fitted arrangement and original routing. Restore protective sleeves on any connector left unconnected as the manual requires. Check that leads are seated and cannot be snagged or pinched; do not apply the conditional yellow/middle-terminal note to an unidentified configuration. Basis: DOCUMENTED reverse connection, sleeve and cable-care instructions; PROPOSED routing inspection. HP printed 41, PDF 51; HP printed 42, PDF 52; HP printed 32, PDF 42
  8. restore - After checking target retention, connectors and cable routing and removing loose hardware, reconnect the main-battery cable to the system board. The main battery has not been removed. Basis: DOCUMENTED reverse battery procedure; PROPOSED inspection join. HP printed 49, PDF 59; HP printed 50, PDF 60
  9. close - Refit the bottom cover, engage its original edges and tighten its eight captive screws in their original locations. Reconnect external devices and AC only after the enclosure is secured. Basis: DOCUMENTED reverse-cover procedure; PROPOSED closed-unit restoration join. HP printed 37, PDF 47; HP printed 38, PDF 48

Proposed checks and limits

UNPERFORMED PROPOSED editorial check after correct complete reassembly: use the existing operating-system device listing to observe WLAN/Bluetooth recognition; no new network connection or upgrade/performance claim is included.

Official manual

HP Maintenance and Service Guide (PDF, HP). Machine-readable copy: /api/guides/hp-elitebook-840-g6-wlan-module